Found the article!
Pretty astonishing. But then, if you consider the arc of 19th century photography, most of the images I can remember use a lot of pictorialist softening (soft focus, veils over the lens, etc.), which suggests that even at that point people thought that their (mostly very large negatives) had an intolerable amount of detail if just shot "as is". All this talk of various 35mm cameras being better than others just reminds me that a competent 60 year old MF camera will still blow any 35 out of the water (dons asbestos suit). And I'm sure LF users can say the same thing.